The Collaborative International Dictionary of English v.0.48:

Misplace \Mis*place"\, v. t. [imp. & p. p. Misplaced; p. pr. &
   vb. n. Misplacing.]
   1. To put in a wrong place; to set or place on an improper or
      unworthy object; as, he misplaced his confidence.
      [1913 Webster]

   2. To place in a location that one does not recall; to
      mislay; to lose.
      [PJC]

WordNet (r) 3.0 (2006):

misplaced
    adj 1: put in the wrong place or position; "She was penalized
           for a spelling mistake or a misplaced accent"
    2: lost temporarily; as especially put in an unaccustomed or
       forgotten place; "the mislaid hat turned up eventually";
       "misplaced tickets" [syn: mislaid, misplaced]

Moby Thesaurus II by Grady Ward, 1.0:

79 Moby Thesaurus words for "misplaced":
   amiss, askew, awry, cockeyed, convulsed, deranged, disarranged,
   discomfited, discomposed, disconcerted, dislocated, disordered,
   disorderly, disorganized, disturbed, haywire, ill-adapted,
   ill-assorted, ill-chosen, ill-fitted, ill-matched, ill-sorted,
   ill-suited, ill-timed, improper, in disorder, inadmissible,
   inapplicable, inapposite, inappropriate, inapt, inept,
   infelicitous, irrelevant, mal a propos, maladjusted, malapropos,
   misjoined, mislaid, mismatched, mismated, misput, on the fritz,
   out of character, out of gear, out of joint, out of keeping,
   out of kelter, out of kilter, out of line, out of order,
   out of place, out of proportion, out of season, out of step,
   out of time, out of tune, out of turn, out of whack, perturbed,
   roily, shuffled, turbid, turbulent, unadapted, unapt, unbecoming,
   unbefitting, unfit, unfitted, unfitting, unqualified, unseasonable,
   unseemly, unsettled, unsuitable, unsuited, untimely, upset